US20040216646A1

US20040216646A1 - Work station

Info

Publication number: US20040216646A1
Application number: US10/856,518
Authority: US
Inventors: Craig Dye
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-12
Filing date: 2004-05-27
Publication date: 2004-11-04

Abstract

A work station having a main post attached to a base, braces attached to the main post to support the main post, and a support assembly that can be attached at a location on the main post between the base and one of the braces. A work station having a plurality of posts, a plurality of braces to support the posts, and a plurality of support assemblies that can be attached to the posts. A support assembly having a cam mechanism for adjustably attaching the support assembly to a post of a work station. A support assembly having tilt/swivel mechanism for positioning a work surface with respect to a post.

Description

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation-in-part of U.S. patent application Ser. No. 10/217,896, filed Aug. 12, 2002, now pending, which application is incorporated herein by reference in its entirety.[0001]

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention is directed to a work station, and more particularly, to a work station or desk having multiple work surfaces that can be easily positioned by the user.

2. Description of the Related Art

The rapid explosion of the use of computers, both in the home and work environment, has created a need for a work station that provides multiple work surfaces that can be easily positioned by the user. In addition, conventional computer work environments often contribute to user injuries and fatigue. Moreover, desired positions for computer system components will often vary based on the length of use, the type of work to be performed, and factors unique to the individual user, as well as other factors. Thus, it can be appreciated that there is a need for a work station that can quickly be adjusted to provide an ergonomic environment with multiple work surfaces for a particular use. The present invention provides these and other advantages, as will be apparent from the following detailed description and accompanying figures.

BRIEF SUMMARY OF THE INVENTION

The work station of the present invention provides a support structure to which multiple work surfaces can be attached in a wide variety of positions. In one embodiment the support structure includes a base for supporting the work station on a surface, a main post attached to the base, a plurality of support braces for supporting the main post relative to the surface, and a support assembly attachable to the main post for supporting a work surface.

In another embodiment, the work station includes first and second vertical supports attachable in a substantially vertical position to an article of furniture, vertical adjustment assemblies adjustably attachable to the first and second vertical supports, support assemblies attachable to the vertical adjustment assemblies, and work surfaces attachable to the support assemblies.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

The foregoing features and advantages will be more appreciated as the same become better understood from the following detailed description when taken in conjunction with the accompanying drawings, wherein: [0008]
FIG. 1 is an isometric projection of one embodiment of a work station formed in accordance with the present invention; [0009]
FIG. 2 is an isometric projection of another embodiment of a work station formed in accordance with the present invention; [0010]
FIG. 3 is a side view of a cam assembly formed in accordance with the present invention; [0011]
FIG. 4 is a rear view of the cam assembly of FIG. 3; [0012]
FIG. 5 is an isometric projection of a further embodiment of a work station formed in accordance with the present invention; [0013]
FIG. 6 is a side view of yet another embodiment of a work station formed in accordance with the present invention; [0014]
FIG. 7 is a top view of an embodiment of a work station formed in accordance with the present invention; [0015]
FIG. 8 is a partial cross-sectional view of a tilt/swivel assembly configured for use with a work station formed in accordance with the present invention; [0016]
FIG. 9 is an isometric projection of another embodiment of a work station formed in accordance with the present invention; [0017]
FIG. 10 is an isometric projection of another embodiment of a work station formed in accordance with the present invention; [0018]
FIG. 11 is side view of a vertical support and vertical adjustment assembly formed in accordance with the present invention; [0019]
FIG. 12 is a front view of the vertical support and vertical adjustment assembly of FIG. 11; [0020]
FIG. 13 is a top view of the vertical support and vertical adjustment assembly of FIG. 11; [0021]
FIG. 14 is another side view of the vertical support and vertical adjustment assembly of FIG. 11; [0022]
FIG. 15 is a side view of another vertical support and vertical adjustment assembly formed in accordance with the present invention; and [0023]
FIG. 16 is an isometric projection of another embodiment of a work station formed in accordance with the present invention.[0024]

DETAILED DESCRIPTION OF THE INVENTION

The present invention provides for a work station that is strong, versatile and moderate in cost. The invention will be described using a limited number of example embodiments and drawings. [0025]
FIG. 1 illustrates a [0026] work station 100 that includes a center post assembly 102 formed of a center post 104 that is attached at a first end 105 to a center post base 106 and at a second end 107 to a center post cap 108. First and second braces 110, 112, respectively, are attached to the center post 104 and to a chase 126 resting on a floor. The braces 110 and 112, however, may be attached to the center post cap 108 or indirectly attached to the center post assembly 102. The center post assembly 102 and the two braces 110 and 112 provide a support structure for the work station 100. The braces 110, 112 are configured so as to provide rigidity to the work station 100 and to brace the center post in a generally upright position. The optional center post base 106 increases the stability of the work station 100. The optional center post cap 108 can provide an additional work surface, as illustrated in FIG. 1.
The [0027] work station 100 also includes a work surface support assembly 130 adjustably attachable to the center post 104 below a point where one of the braces 110, 112 attaches to the center post assembly 102. As illustrated in FIG. 1, the work surface support assembly 130 includes a post sleeve 132 positionable on the center post 104, an adjustable boom assembly 134 that may be extended, and a mount 136 for mounting a work surface 138. The adjustable boom assembly 134 has an inner boom sleeve 133 attached to the post sleeve 132 and an outer boom sleeve 135 that adjustably engages the inner boom sleeve 133. The mount 136 may be pivotally attached to the adjustable boom assembly 134, and the work surface 138 may be pivotally attached to the mount 136. The work surface 138 is configured to support a variety of objects, such as a monitor, a keyboard, books, papers, and the like (not shown).
The [0028] work station 100 illustrated in FIG. 1 has an optional first side post assembly 114 that includes a first side post 116 attached to a first side post base 118, and an optional second side post assembly 120 having a second side post 122 attached to a second side post base 124. As illustrated in FIG. 1, the second side post 122 is extendable in telescopic fashion. The second side post 122 has an inner sleeve 121 that frictionally engages an outer sleeve 123. One of skill in the art will recognize that various telescopic posts can be used. For example, a post held in place by friction may be used or a post held in place by a locking mechanism may be utilized. The center post 104 and the first side post 116 may also be extendable, and the second side post 122 may be fixed.
The [0029] first brace 110 also is attached to the first side post assembly 114. The second brace 112 also is attached to the second side post assembly 120. The work station 100 includes an optional chase 126 attached to the center post assembly 102, the first side post assembly 114, and the second side post assembly 120. The chase 126 may house wiring (not shown) for use with various items, such as computers, monitors, keyboards, light fixtures and the like (not shown). Other components of the work station 100, such as the center post assembly 102, may also house wiring (not shown).
As illustrated in FIG. 1, additional work [0030] surface support assemblies 140, 142, are attached to the first side post assembly 114 and the second side post assembly 120, respectively, for supporting additional work surfaces 144 and 146. (See FIGS. 3 and 4, discussed in more detail below). In addition, the work surface support assemblies 130, 140, 142, may support additional work surfaces (not shown). For example, the work surface support assembly 130 could support a work surface for a monitor (not shown) and a work surface for a keyboard (not shown), as discussed in more detail below with respect to FIG. 6.
FIG. 2 is an external view of another embodiment of a [0031] work station 101 of the present invention. In FIG. 2, the brace 112 is attached to a piece of furniture 150. An additional post assembly 160 is attached to the piece of furniture 150. FIG. 2 also illustrates a bookshelf 170 supported by the center post assembly 102 and the side post assembly 114.
FIGS. 3 and 4 illustrate a [0032] cam assembly 200 that can be used in work surface support assemblies, such as the work surface support assembly 140 shown in FIG. 1. A sleeve 202 is configured to be slidably and rotationally mounted on a post 204. A cam 208 is pivotally coupled to the sleeve 202 by a cam pin 206 in a cam holder 207. The sleeve 202 also has a mounting hole 210 through which an arm 212 for supporting a work surface (not shown) may be inserted. The cam 208 has a contact surface 209, a portion of which engages the post 204. In one embodiment, the cam pin 206 is positioned off-center with respect to the contact surface 209. Alternatively the contact surface 209 is formed to have a lobe that contacts the post 204 as the cam 208 rotates, thereby using frictional engagement to maintain the cam assembly in position on the post 204. Thus, the cam 208 is adjustable between a locked position, where the cam 208 will hold the sleeve 202 in position on the post 204, and an unlocked position, where the sleeve 202 can be repositioned on the post 204. The cam surface 209 may also be position in such a way that it does not engage the post 204 (not shown).
In an exemplary embodiment, the [0033] cam 208 is configured to move into a locked position by the force of gravity. As illustrated in FIGS. 3 and 4, gravity will cause the cam 208 to move into the locked position when it is released. One of skill in the art will recognize that other mechanisms may be employed to move the cam 208 into the locked position, such as spring mechanisms, and the like.
FIG. 5 illustrates a [0034] work station 103 wherein a work surface support assembly 180 is coupled to the brace 112. FIG. 5 also illustrates multiple work surface support assemblies 182, 184, 186, 188, and 190 attached to side post assemblies 114 and 120.
FIG. 6 illustrates a [0035] work station 105 attached to a wall 602. The work station 105 has a first beam 604 attached to the wall 602 by a plurality of braces 606, 608. A work surface support assembly 610 is attachable to the beam 604. A plurality of work surfaces 612, 614, are attachable to the work surface support assembly 610 in such a way that the positions and angles of the work surfaces 612, 614, are independently adjustable with respect to the beam 604. Additional work surface support assemblies 616, 618 may be attached to the beam 604 to support additional work surfaces 620, 622.
A [0036] second beam 626 is attached to the first beam 604 using braces 628, 630. An additional work surface support assembly 632 is attached to the second beam 626. An additional work surface 634 is supported by the work surface support assembly 632.
The position and angle of a work surface, such as [0037] work surface 612, may be adjustable using one hand. For example, the work surface support assembly 610 includes an extendable boom assembly 624 that is pivotally coupled to a sleeve 626 and that may be manually rotated by a user exerting rotational force on the work surface 612. At the same time, a user may be able adjust the length of the extendable boom assembly 624 by either pulling on, or pushing on, the work surface 612.
FIG. 7 illustrates a top view of a [0038] work environment 700 formed in accordance with the present invention. The work environment 700 includes a modular wall structure 702. The modular wall structure 702 may have a plurality of wall panels 704, 706. A plurality of modular units 708, 710, 712, 714, 716, are attachable to the modular wall structure 702. The plurality of modular units 708, 710, 712, 714, and 716, may be comprised of a variety of different modular units, such as book shelves, table tops, foot rests, brackets for supporting other structures, etc., and the like. The plurality of modular units 708, 710, 712, 714, and 716, may also be attached to the modular wall structure 702 at different heights and need not be attached to each other.
The [0039] work environment 700 also has a plurality of work surface support beams 718, 720, 722 attachable to the plurality of modular units 708, 710, 712, 714, and 716. One of skill in the art will recognize that the individual support beams, for example the support beam 718, may be attachable to a single modular unit, such as the modular unit 710, or may be attachable to multiple modular units (not shown). Similarly, one of skill in the art will recognize that more than one support beam may be attached to a modular unit (not shown).
The [0040] work environment 700 also has a plurality of work surface support assemblies 724, 726 and 728, attachable to the plurality of work surface support beams 718, 720, 722. Work surfaces 725, 727, and 729 are coupled respectively to work surface support assemblies 724, 726 and 728. The work environment 700 may also employ additional support structures, such as the brace 730 illustrated in FIG. 7, to support the plurality of work surface support beams 718, 720, 722.
FIG. 8 illustrates an example of a tilt/[0041] swivel assembly 800 that can be used with the desk or work station of the present invention. The tilt/swivel assembly 800 has a lower bracket 802 that is attached to an arm 804 of a work surface support assembly by a bolt 806, a washer 808, and a nut 810. Two friction plates 812 and 814 placed between the lower bracket 802 and the arm 804 permit the tilt/swivel assembly 800 to pivot about axis A-A′. An upper bracket 816 is attached to the lower bracket 802 using bolts 818, washers 820, and nuts 822. Friction plates 824 and 826 permit the upper bracket to rotate about axis B-B′. A work surface 830 is attached to the upper bracket 816 using conventional means, such as mounting bolts 832.
FIG. 9 illustrates a [0042] work station 100 that includes a shelving unit 902. Other articles of furniture, such as a desk (not shown) or a cabinet (not shown) could be employed instead of the shelving unit 902. A first vertical support 904 is affixed in a generally upright position to an external front surface 903 of the shelving unit 902 abutting a first sidewall 906 of the shelving unit 902. Alternatively, the first vertical support 904 could be affixed to an external surface 907 of the first sidewall 906. The first vertical support 904 has a c-shaped cross-sectional configuration and is described in more detail below (see FIGS. 11-14). An optional support foot 910 is attached to the front 903 of the shelving unit 902. A second vertical support 912 is affixed in a generally upright position to a second side wall 914 of the shelving unit 902 using mounting brackets (not shown). An angle θ between the second vertical support 912 and the shelving unit 902 is adjustable by, for example, using brackets with a detent mechanism. An optional base 982 is attached to the second vertical support 912. The shelving unit 902 includes an optional chase 916, through which wiring (not shown) may be routed. The shelving unit 902 also contains shelves 991, 992.
The [0043] work station 100 also includes a first vertical adjustment assembly 908 slidably attached to the first vertical support 904 to be positionable at various places along the first vertical support 904. The first vertical support 904 and the first vertical adjustment assembly 908 are described in more detail below with respect to FIGS. 11-14. The first vertical adjustment assembly 908 is adjustably coupled to a support assembly 930 (see also FIGS. 11-14). The support assembly 930 projects away from the shelving unit 902 and includes an adjustable boom assembly 934 that may be extended away from the first vertical adjustment assembly 908, and a mount 936 (see FIG. 1) for mounting a work surface 938 (see also FIGS. 1, 5 and 8). The work surface 938 is configured to support a variety of objects, such as a monitor, a keyboard, books, papers, and the like (not shown) and may be adjustably attached to the support assembly 930 (see the description of FIG. 8).
The [0044] work station 100 also includes a second vertical adjustment assembly 939 slidably attached to the second vertical support 912 to be positionable at various places along the second vertical support 912. The second vertical adjustment assembly 939 is coupled to a second support assembly 940. A second work surface 948 is attached to the second support assembly 940. A third vertical adjustment assembly 949 is slidably attached to the second vertical support 912 to be positionable at various places along the second vertical support 912. The third vertical adjustment assembly 949 is coupled to a third support assembly 950 that is attached to a lamp 958. An optional base 982 is attached to the second vertical support 912.
FIG. 10 illustrates a [0045] work station 901 that includes the work station 100 shown and described above with respect to FIG. 9. The second vertical support 912 is also attached to a first sidewall 964 of a second shelving unit 962 using hinges (not shown). An optional top wall 980 is attached to the second sidewall 914 of the first shelving unit 902 and the first side wall 964 of the second shelving unit 962 using L-brackets (not shown). The third vertical adjustment assembly 949, the third support assembly 950, and the lamp 958 shown in FIG. 9 are omitted from FIG. 10 for clarity. The optional support foot 910 also is omitted from FIG. 10. A third vertical support 966 is attached to a front side 969 of the second shelving unit 962 abutting a second sidewall 968 of the second shelving unit 962. A fourth vertical adjustment assembly 970 is slidably attached to the third vertical support 966. A fourth support assembly 972 is adjustably attached to the fourth vertical adjustment assembly 970, and supports a third work surface 978.
FIGS. 11 through 14 illustrate a [0046] vertical support 300 and vertical adjustment assembly 400 in accordance with an embodiment of the invention, providing, respectively, a side view, a front view, a top view and another side view of the coupling of the vertical support 300 and the vertical adjustment assembly 400. The vertical support 300 has a c-shaped cross-sectional configuration with a rectangular-shaped longitudinal vertical channel 302 formed between a back wall 304, a first side wall 306, a second side wall 308, a first front arm 310 and a second front arm 312. The channel 302 is in communication with a longitudinal access opening 314 defined by the first and second front arms 310, 312. Portions of the vertical support 300 are omitted from FIGS. 11-14 for clarity.
As shown in FIG. 11, the [0047] vertical adjustment assembly 400 includes a body 402. The body 402 fits into the channel 302 of the vertical support 300 through the access opening 314. A pair of top roller bearings 404 are mounted to the top 405 of the body 402 using a roller bearing bolt 406, spacers 408 and a nut 410. Alternatively, a single top roller bearing 404 could be mounted to the top 405 of the body 402. A pair of bottom roller bearings 412 are mounted to the bottom 413 of the body 402 using a roller bearing bolt 414, spacers 416 and a nut 418.
A pair of [0048] top cleats 420 are mounted to the top 405 of the body 402 and a bottom cleat 422 is mounted to the bottom 413 of the body 402. After reviewing the specification, one of skill in the art would recognize that a single top cleat mounted through the body could be employed. A support assembly 500 is mounted to the body 402 using a bolt 424, two washers 426 and a nut 428. The support assembly 500 may be mounted to the body 402 at various angles with respect to the body 402.
FIGS. 11 through 13 illustrate the [0049] vertical adjustment assembly 400 when it is locked into position with respect to the vertical support 300. The top cleats 420 press against the first and second front arms 310, 312, respectively, of the vertical support 300. The bottom cleat 422 presses against the back wall 304 of the vertical support 300. Gravity pulls the vertical adjustment assembly 400 into the locked position with respect to the vertical support 300 and, when the vertical adjustment assembly 400 is in the locked position, friction holds the vertical adjustment assembly 400 in place vertically with respect to the vertical support 300.
FIG. 14 illustrates the [0050] vertical adjustment assembly 400 when an upward force F is applied to the vertical adjustment assembly 400 with respect to the vertical support 300. The upward force F can be applied by a user to the body 402. In response to the upward force F, the vertical adjustment assembly 400 shifts to an unlocked position with respect to the vertical support 300. The top cleats 420 do not engage the first and second front arms 310, 312 of the vertical support 300 and the bottom cleat 422 does not engage the back wall 304 of the vertical support 300. Instead, the top bearings 404 engage the back wall 304 and the bottom bearings 412 engage the first and second front arms 310, 312 of the vertical support 300. When in the unlocked position, the vertical adjustment assembly 400 can be easily moved in an upward or downward manner with respect to the vertical support 300. When the vertical adjustment assembly 400 is at the desired vertical position on the vertical support 300, the upward force F is discontinued and gravity will cause the vertical adjustment assembly 400 to shift into the locked position with respect to the vertical support 300.
FIG. 15 provides a side view of another [0051] vertical support 300 and vertical adjustment assembly 400 formed in accordance with an embodiment of the invention. For convenience, a numbering scheme corresponding to the numbering schemes of FIGS. 11 through 14 is employed. The vertical adjustment assembly 400 includes a motor 440 and a pulley 442. The motor 440 is secured to a top 980 of a piece of furniture using a pair of mounting brackets 982. Alternatively, the motor 440 could be secured to another part of a piece of furniture (not shown) or to a back wall 304 of the vertical support 300. The motor 440 has a drive shaft 444 extending through the back wall into a channel 302. The pulley 442 is affixed to the drive shaft 444 in the channel 302. A cable 446 is attached to the pulley 442 and to a body 402 of the vertical adjustment assembly 400. A support assembly 500 is attached to the body 402. The support assembly 500 supports a work surface 510. A control switch 448 is mounted to the work surface 510 and electrically coupled to the motor 440 by wiring 450. Although the control switch 448 is shown mounted to the work surface 510, the control switch 448 need not be mounted to any particular object. Using the control switch 448 a user can move the body 402 of the vertical adjustment assembly 400 into a desired vertical position by activating the motor 440.
FIG. 16 illustrates a [0052] work station 100 that includes a verticle support 102 that includes a vertical channel (see FIGS. 11-14). The vertical support 102 is mounted to a surface 104 of a piece of furniture 106. A vertical adjustment assembly 108 is adjustably coupled to the vertical support 102. The vertical adjustment assembly 108 is adjustably coupled to a first arm 120 of a support assembly 130. As illustrated, the first arm 120 is substantially parallel to the vertical support 102. The first arm 120 is coupled to a second arm 122 of the support assembly 130. As illustrated, the second arm 122 is substantially perpendicular to the vertical support 102. An adjustable boom assembly 134 is adjustably coupled to the second arm 122 of the support assembly 130. A work surface 138 is adjustably coupled to the adjustable boom assembly 134.
After reviewing the specification, one of skill in the art will recognize that alternative embodiments for the [0053] vertical support 300 and the vertical adjustment assembly 400 may be employed. For example, a beam or post could be attached to the shelving unit 902 and a cam assembly (see FIGS. 1 through 6) could be attached to the beam or post.
All of the above U.S. patents, U.S. patent application publications, U.S. patent applications, foreign patents, foreign patent applications and non-patent publications referred to in this specification and/or listed in the Application Data Sheet, are incorporated herein by reference, in their entirety. [0054]
From the foregoing it will be appreciated that, although specific embodiments of the invention have been described herein for purposes of illustration, various modifications may be made without deviating from the spirit and scope of the invention. Accordingly, the invention is not limited except as by the appended claims and the equivalents thereof. [0055]

Claims

1. A work station, comprising:

a first vertical support attachable in a substantially vertical position to a first external surface of a first article of furniture;

a second vertical support attachable in a substantially vertical position to a second external surface of the first article of furniture;

a first vertical adjustment assembly adjustably attachable to the first vertical support;

a second vertical adjustment assembly adjustably attachable to the second vertical support;

a first support assembly attachable to the first vertical adjustment assembly; and

a second support assembly attachable to the second vertical adjustment assembly.

2. The work station of claim 1 wherein the first article of furniture is a shelving unit.

3. The work station of claim 1, further comprising a third vertical support attachable to a second article of furniture, wherein the third vertical support is supported in a substantially vertical position by the second article of furniture.

4. The work station of claim 1, further comprising a third support assembly.

5. The work station of claim 1 wherein the first vertical support has a vertical channel and the first vertical adjustment assembly selectively engages the vertical channel.

6. The work station of claim 1 wherein an angle between the first vertical support and the article of furniture is adjustable.

7. The work station of claim 1 wherein the first vertical support comprises a post and the first vertical adjustment assembly comprises a cam assembly.

8. The work station of claim 1 wherein the first vertical support has a vertical channel and the first vertical adjustment assembly has a cleat that selectively engages the vertical channel.

9. The work station of claim 1 further comprising a motor mechanically coupled to the first vertical adjustment assembly.

10. The work station of claim 1 wherein the first support assembly has a first arm and a second arm, and the first arm is attachable to the first vertical adjustment assembly in a substantially vertical position and the second arm is attachable to the first arm in a substantially horizontal position.

11. A work station, comprising:

a shelving unit having a front, first and second external sides and a plurality of shelves;

a first vertical support attached to the front of the shelving unit adjacent to the first external side and positioned in a generally vertical position;

a second vertical support attached to the second external side of the shelving unit and positioned in a generally vertical position;

a first vertical adjustment assembly adjustably attached to the first vertical support;

a first support assembly attached to the first vertical adjustment assembly;

a first work surface attached to the first support assembly;

a second vertical adjustment assembly adjustably attached to the second vertical support;

a second support assembly attached to the second vertical adjustment assembly; and

a second work surface attached to the second support assembly.

12. A work station, comprising:

a first shelving unit having a first side, a second side and a plurality of shelves;

a second shelving unit having a first side, a second side and a plurality of shelves;

a first vertical support attached to the first side of the first shelving unit;

a second vertical support attached to the second side of the first shelving unit and to the first side of the second shelving unit;

a first support assembly attached to the first vertical adjustment assembly; and

a second support assembly attached to the second vertical adjustment assembly.

13. The work station of claim 12 further comprising a third vertical support attached to the second side of the second shelving unit.

14. The work station of claim 12 further comprising a work-surface attached to the first support assembly.

15. The work station of claim 12 further comprising a motor mechanically coupled to the first vertical adjustment assembly.

16. A work station, comprising:

first and second vertical supports attached in a substantially vertical position to an article of furniture;

a second support assembly attached to the second vertical adjustment assembly, wherein the first and second support assemblies project away from the article of furniture.

17. The work station of claim 16 further comprising a motor mechanically coupled to the first vertical adjustment assembly.

18. A work station, comprising:

a vertical support attachable in a substantially vertical position to an article of furniture, the vertical support having a substantially vertical channel;

a vertical adjustment assembly adjustably coupled to the vertical support, the vertical adjustment assembly selectively engaging the vertical channel of the vertical support; and

a support assembly attachable to the vertical adjustment assembly.

19. The work station of claim 18 further comprising a motor mechanically coupled to the vertical adjustment assembly.

20. The work station of claim 18 wherein the support assembly comprises a first arm.

21. The work station of claim 20 wherein the first arm is attachable to the vertical support assembly in a substantially vertical position.

22. The work station of claim 21 wherein the support assembly further comprises a second arm attachable to the first arm in a substantially horizontal position.